| A | B |
| Disorder | Any functional abnormality. |
| Signs | Objective changes in the body that can be observed and measured. |
| Symptoms | Subjective changes in the body of which only the person experiencing them is aware. |
| Syndrome | Signs and symptoms that define a particular disease or abnormality. |
| Disease | Any illness that is characterized by certain signs and symptoms. |
| Local disease | Only affecting one area of the body. |
| Acute | An abrupt onset of severe symptoms that run a brief course. |
| Chronic | A disease that develops slowly and lasts longer than six months. |
| Diagnosing | Distinguishing diseases or disorders from one another. |
| Cancerous | Characterized by the uncontrollable growth of abnormal cells. |
| Malignant | A cancerous tumor. |
| Matastasize | Cancerous cells spreading to other parts of the body. |
| Benign | A tumor that does not metastasize. |
| Deficiency disease | Caused by the lack of essential nutrients. |
| Degenerative disease | Tissue breakdown caused by overuse or aging. |
| Genetic disease | Caused by an abnormality in the genetic code. |
| Infectious disease | Caused by biological agents. |
| Metabolic disease | Physiological dysfunctions that disrupt the body's metabolism. |
| Congenital | Disorders present at birth. |
| Traumatic | Injuries that disrupt homeostasis. |